Mechanical lifters were once commonplace in internal combustions engines, but they've been mostly replaced by hydraulic ...

The rules in some racing classes restrict competitors to running hydraulic valve lifters. Cheaters have been known to run hydraulic lifters on a mechanical (solid) cam profile. Solid cam profiles ...

At the very least, tearing down, inspecting, and cleaning hydraulic lifters is good engine hygiene that can contribute to long service life in your classic car. It’s also a great way to inspect the ...

Once upon a time, most car engines used solid or mechanical lifters. But unlike most fairy tales that begin that way, there was no lasting happy ending for them. Hydraulic lifters first appeared in ...

Cars are intricate machines that rely on a series of chemical and mechanical processes to work properly. When things go wrong with one of those processes, your car can start to make some strange ...

Sorry, solid lifters, you make a wonderful typewriter clack and allow for intoxicatingly high rpms, but you can't be surprised that manufacturers slowly moved to ...

Deep in the New Mexico desert sits the Very Large Array radio telescope. The VLA is different from many other telescopes in that it's not just a single installation, but is made up of 27 giant radio ...

COMP Cams Explains the Pros and Cons of Solid, Hydraulic, Flat-Tappet, and Roller Cams, and the Advanced Technology that makes them all Work. With horsepower seemingly growing on trees these days, ...